few small fixes

packages/flutter_mozilla_components/android/src/main/kotlin/eu/lensai/flutter_mozilla_components/api/GeckoBrowserApiImpl.kt

@@ -89,10 +89,10 @@ class GeckoBrowserApiImpl : GeckoBrowserApi {
         synchronized(this) {
             if(!isGeckoInitialized) {
                 Log.addSink(AndroidLogSink())
-            }
 
-            setupGeckoEngine()
-            isGeckoInitialized = true
+                setupGeckoEngine()
+                isGeckoInitialized = true
+            }
         }
     }